forked from OSchip/llvm-project
134 lines
4.4 KiB
C++
134 lines
4.4 KiB
C++
//===-- MemoryGauge.cpp -----------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "MemoryGauge.h"
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#include "lldb/lldb-forward.h"
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#include <assert.h>
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#include <cmath>
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#include <mach/mach.h>
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#include <mach/mach_traps.h>
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#include <mach/task.h>
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using namespace lldb_perf;
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MemoryStats::MemoryStats(mach_vm_size_t virtual_size,
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mach_vm_size_t resident_size,
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mach_vm_size_t max_resident_size)
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: m_virtual_size(virtual_size), m_resident_size(resident_size),
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m_max_resident_size(max_resident_size) {}
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MemoryStats::MemoryStats(const MemoryStats &rhs)
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: m_virtual_size(rhs.m_virtual_size), m_resident_size(rhs.m_resident_size),
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m_max_resident_size(rhs.m_max_resident_size) {}
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MemoryStats &MemoryStats::operator=(const MemoryStats &rhs) {
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if (this != &rhs) {
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m_virtual_size = rhs.m_virtual_size;
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m_resident_size = rhs.m_resident_size;
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m_max_resident_size = rhs.m_max_resident_size;
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}
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return *this;
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}
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MemoryStats &MemoryStats::operator+=(const MemoryStats &rhs) {
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m_virtual_size += rhs.m_virtual_size;
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m_resident_size += rhs.m_resident_size;
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m_max_resident_size += rhs.m_max_resident_size;
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return *this;
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}
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MemoryStats MemoryStats::operator-(const MemoryStats &rhs) {
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return MemoryStats(m_virtual_size - rhs.m_virtual_size,
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m_resident_size - rhs.m_resident_size,
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m_max_resident_size - rhs.m_max_resident_size);
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}
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MemoryStats MemoryStats::operator+(const MemoryStats &rhs) {
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return MemoryStats(m_virtual_size + rhs.m_virtual_size,
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m_resident_size + rhs.m_resident_size,
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m_max_resident_size + rhs.m_max_resident_size);
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}
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MemoryStats MemoryStats::operator/(size_t n) {
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MemoryStats result(*this);
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result.m_virtual_size /= n;
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result.m_resident_size /= n;
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result.m_max_resident_size /= n;
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return result;
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}
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MemoryStats MemoryStats::operator*(const MemoryStats &rhs) {
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return MemoryStats(m_virtual_size * rhs.m_virtual_size,
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m_resident_size * rhs.m_resident_size,
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m_max_resident_size * rhs.m_max_resident_size);
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}
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Results::ResultSP MemoryStats::GetResult(const char *name,
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const char *description) const {
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std::unique_ptr<Results::Dictionary> dict_ap(
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new Results::Dictionary(name, NULL));
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dict_ap->AddUnsigned("resident", NULL, GetResidentSize());
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dict_ap->AddUnsigned("max_resident", NULL, GetMaxResidentSize());
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return Results::ResultSP(dict_ap.release());
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}
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MemoryGauge::ValueType MemoryGauge::Now() {
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task_t task = mach_task_self();
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mach_task_basic_info_data_t taskBasicInfo;
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mach_msg_type_number_t count = MACH_TASK_BASIC_INFO_COUNT;
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auto task_info_ret = task_info(task, MACH_TASK_BASIC_INFO,
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(task_info_t)&taskBasicInfo, &count);
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if (task_info_ret == KERN_SUCCESS) {
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return MemoryStats(taskBasicInfo.virtual_size, taskBasicInfo.resident_size,
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taskBasicInfo.resident_size_max);
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}
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return 0;
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}
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MemoryGauge::MemoryGauge()
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: m_state(MemoryGauge::State::eNeverUsed), m_start(), m_delta() {}
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void MemoryGauge::Start() {
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m_state = MemoryGauge::State::eCounting;
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m_start = Now();
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}
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MemoryGauge::ValueType MemoryGauge::Stop() {
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m_stop = Now();
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assert(m_state == MemoryGauge::State::eCounting &&
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"cannot stop a non-started gauge");
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m_state = MemoryGauge::State::eStopped;
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m_delta = m_stop - m_start;
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return m_delta;
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}
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MemoryGauge::ValueType MemoryGauge::GetDeltaValue() const {
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assert(m_state == MemoryGauge::State::eStopped &&
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"gauge must be used before you can evaluate it");
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return m_delta;
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}
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template <>
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Results::ResultSP lldb_perf::GetResult(const char *description,
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MemoryStats value) {
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return value.GetResult(NULL, description);
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}
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MemoryStats sqrt(const MemoryStats &arg) {
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long double virt_size = arg.GetVirtualSize();
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long double resident_size = arg.GetResidentSize();
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long double max_resident_size = arg.GetMaxResidentSize();
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virt_size = sqrtl(virt_size);
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resident_size = sqrtl(resident_size);
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max_resident_size = sqrtl(max_resident_size);
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return MemoryStats(virt_size, resident_size, max_resident_size);
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}
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